Magento Web Agency — London & Brighton

A Magento agency built by people who have run eCommerce stores.

Over a decade of hands-on Magento experience. We have developed for merchants from the inside — we know what matters when your store goes down at midnight, when a Black Friday peak arrives unexpectedly, and when a migration needs to happen without losing a single order.
10+
Years specialist eCommerce experience
0.54s
Homepage load time achieved for a Magento client — down from 3.5s
50%
Overnight order increase for Sons post-platform migration
400k+
Customers served on platforms we have built
What We Do

Full-service eCommerce — from Magento to headless builds

We cover the full eCommerce lifecycle: platform selection, new builds, migrations, performance, hosting, support and ongoing development. No generalists.

Magento 2 Development

New Magento 2 builds, existing store development, module development, API integrations, B2B, multi-site and enterprise builds. Magento is still one of the most powerful platforms for complex requirements.

OpenMage LTS

The community-maintained continuation of Magento 1. If your business runs well on Magento 1 and a Magento 2 migration is not the right step yet, OpenMage keeps you secure and supported.

Shopify & Headless

Shopify builds, custom themes, Shopify Plus and fully headless Next.js architectures using Shopify as the catalogue and CMS layer — with custom checkouts and payment logic built on top.

WooCommerce

Custom WooCommerce builds and development for businesses where WordPress is the right fit — with all the performance and reliability engineering that platform requires to run well at scale.

Bespoke Platforms

When no off-the-shelf solution fits — particularly in regulated sectors — we build from scratch. Our bespoke Symfony/PHP and Next.js platform for Sons is a flagship example of this capability.

Platform Migrations

Zero-downtime migrations between any platform. Full data preservation, SEO-safe redirect mapping, pre-launch load testing and a controlled cutover process. We have done this dozens of times.

Why BigHat

Why choose us over any other Magento agency?

We have worked inside merchant businesses

The difference between BigHat and most agencies is that we have worked in-house for eCommerce merchants — inside the warehouse, alongside finance, in the same room as the MD. We know the real-world pressures of running an eCommerce operation, not just the technical ones.

We specialise — we are not a generalist agency

We do eCommerce. We do not do brochure sites, we do not dabble in eCommerce as a sideline. Magento, Shopify, WooCommerce, OpenMage, headless Next.js — this is all we do, and we do it at depth.

Performance is our obsession

Amazon found that every second of page load delay costs 7% in conversion rate. We have taken client stores from 3.5 second homepage load times to 0.54 seconds — a mix of server-side architecture and code-level optimisation that only comes from deep specialism.

We are honest and we stay

We have clients we have worked with for nearly three years continuously. We do not churn. We are not interested in projects — we are interested in partnerships. When we recommend a platform or approach, it is because we believe it is right for your business, not because it maximises our invoice.

Performance

Store performance is not optional. It is revenue.

Amazon's research is clear: every additional second of load time above 3 seconds costs 7% of your conversion rate. For a store doing £500k per year, a 2-second improvement is worth £70,000 in recovered revenue before you spend a penny on marketing.

One of our clients saw their Magento homepage load from 3.5 seconds down to 0.54 seconds — a combination of server architecture, caching configuration, code-level optimisation and our bespoke hosting stack built specifically for Magento workloads.

View our hosting infrastructure
Performance Impact Model
Store revenue (annual)£500,000
Load time improvement3.5s → 0.54s
Conversion rate recovery (7%/s)+~20%
Recovered annual revenue~£100,000

Performance work typically pays back within weeks for established stores. This is not optional maintenance — it is direct revenue recovery.

Ready to talk Magento?

Whether you need a new build, a migration, a performance rescue or long-term support — call us or send a message.

All services